Louis Koo (Koo Tin-lok 古天樂; born 21 October 1970) is a Hong Kong film actor. He began his professional career as an actor in local television series, winning TVB's Best Actor award in 1999 and 2001. For the past decade, he has focused primarily on his film career. Koo has become one of the stalwarts of the Hong Kong film industry, and is a popular spokesman for various brands including Pepsi, Osim, Tag Heuer, Lotte, Zero Eyewear, Lay's, and Samsung Galaxy.